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| Patents Granted on 1957-08-20 | |||||
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| Number | Date | Patentee | Title | Type | |
| D180,815 | Aug. 20, 1957 | J.G. Bentley | Portable power operated saw | handheld circular saws | |
| 2,803,448 | Aug. 20, 1957 | L.B. Biebel | Computing scale | ||